<?php
class SimpleImage
{
    var $image;
    var $image_type;
 
    function load($filename)
    {
 
        $image_info = getimagesize($filename);
        $this->image_type = $image_info[2];
        if( $this->image_type == IMAGETYPE_JPEG )
        {
            $this->image = imagecreatefromjpeg($filename);
        }
        elseif( $this->image_type == IMAGETYPE_GIF )
        {
            $this->image = imagecreatefromgif($filename);
        }elseif( $this->image_type == IMAGETYPE_PNG )
        {
            $this->image = imagecreatefrompng($filename);
        }
    }
    
    function save($filename, $image_type=IMAGETYPE_JPEG, $compression=75, $permissions=null)
    {
        if( $image_type == IMAGETYPE_JPEG )
        {
            imagejpeg($this->image,$filename,$compression);
        }elseif( $image_type == IMAGETYPE_GIF )
        {
            imagegif($this->image,$filename);
        }elseif( $image_type == IMAGETYPE_PNG )
        {
            imagepng($this->image,$filename);
        }
        if( $permissions != null)
        {
            chmod($filename,$permissions);
        }
    }
   function output($image_type=IMAGETYPE_JPEG)
   {
 
      if( $image_type == IMAGETYPE_JPEG )
      {
         imagejpeg($this->image);
      }elseif( $image_type == IMAGETYPE_GIF )
      {
 
         imagegif($this->image);
      } elseif( $image_type == IMAGETYPE_PNG )
      {
 
         imagepng($this->image);
      }
   }
   function getWidth()
   {
 
      return imagesx($this->image);
   }
   function getHeight()
   {
 
      return imagesy($this->image);
   }
   function resizeToHeight($height)
   {
 
      $ratio = $height / $this->getHeight();
      $width = $this->getWidth() * $ratio;
      $this->resize($width,$height);
   }
 
   function resizeToWidth($width)
   {
      $ratio = $width / $this->getWidth();
      $height = $this->getheight() * $ratio;
      $this->resize($width,$height);
   }
 
   function scale($scale)
   {
      $width = $this->getWidth() * $scale/100;
      $height = $this->getheight() * $scale/100;
      $this->resize($width,$height);
   }
 
   function resize($width,$height)
   {
      $new_image = imagecreatetruecolor($width, $height);
      imagecopyresampled($new_image, $this->image, 0, 0, 0, 0, $width, $height, $this->getWidth(), $this->getHeight());
      $this->image = $new_image;
   }      
 
}
?>